JPH02103579U - - Google Patents
Info
- Publication number
- JPH02103579U JPH02103579U JP1989013780U JP1378089U JPH02103579U JP H02103579 U JPH02103579 U JP H02103579U JP 1989013780 U JP1989013780 U JP 1989013780U JP 1378089 U JP1378089 U JP 1378089U JP H02103579 U JPH02103579 U JP H02103579U
- Authority
- JP
- Japan
- Prior art keywords
- valve
- valve body
- cover portion
- check valve
- casing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 239000012530 fluid Substances 0.000 claims 3
- 238000007789 sealing Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
- 239000003507 refrigerant Substances 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K15/00—Check valves
- F16K15/02—Check valves with guided rigid valve members
- F16K15/06—Check valves with guided rigid valve members with guided stems
- F16K15/063—Check valves with guided rigid valve members with guided stems the valve being loaded by a spring
- F16K15/065—Check valves with guided rigid valve members with guided stems the valve being loaded by a spring spring pulling the closure member against the seat
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Check Valves (AREA)
- Details Of Valves (AREA)
Description
第１図は本願考案の実施例にかかる逆止弁の縦
断面図、第２図は第１図の開弁状態における一部
拡大図、第３図は第１図の逆止弁の特性グラフ、
第４図は冷凍装置の冷媒回路の例示図、第５図は
従来の逆止弁の例示図である。
２０…ケーシング、２１…ケーシング入口、２
２…ケーシング出口、３０…ブロツク部材、３１
…弁座面、３２…弁通路部、３９…覆い部、４０
…弁部材、４３…弁体、４８…スプリング、４９
…弁体外周面、５１…環状隙間。
FIG. 1 is a longitudinal sectional view of a check valve according to an embodiment of the present invention, FIG. 2 is a partially enlarged view of FIG. 1 in an open state, and FIG. 3 is a characteristic graph of the check valve of FIG. 1. ,
FIG. 4 is an illustrative diagram of a refrigerant circuit of a refrigeration system, and FIG. 5 is an illustrative diagram of a conventional check valve. 20...Casing, 21...Casing inlet, 2
2...Casing outlet, 30...Block member, 31
...Valve seat surface, 32...Valve passage section, 39...Cover section, 40
...Valve member, 43...Valve body, 48...Spring, 49
...Outer peripheral surface of the valve body, 51...Annular gap.
Claims (1)
グ２０内に、内部に弁通路部３２を有し一端側に
円錐面形状の弁座面３１を有する筒状のブロツク
部材３０と、前記弁座面３１に着座または離間し
て前記弁通路部３２を開閉する弁シール面４６を
有する円盤状の弁体４３をそなえ且つ該弁体４３
がスプリング４８により付勢されていて前記ケー
シング入口２１側流体の圧力とケーシング出口２
２側流体の圧力の差圧が一定以上あるときのみ前
記弁通路部３２を開放するようにされた逆止弁で
あつて、前記ブロツク部材３０に前記弁座面３１
の後流側において前記弁体４３の周囲を囲繞する
覆い部３９を設けて前記弁体４３の外周面４９と
覆い部３９の間において流体Ｆの流通抵抗となる
環状隙間５１が形成されるようにしたことを特徴
とする逆止弁。 ２ 弁体４３の外周面４９とその周囲を囲繞する
覆い部３９とがそれぞれ円筒形状とされており両
者の環状隙間５１の通路面積が、弁体４３が開弁
後所定ストローク変位するまでの間一定値に保持
されるようにされていることを特徴とする請求項
第１項記載の逆止弁。[Claims for Utility Model Registration] 1. A cylindrical block having a valve passage portion 32 inside and a conical valve seat surface 31 at one end in a cylindrical casing 20 having an inlet 21 and an outlet 22. The valve body 43 includes a member 30 and a disk-shaped valve body 43 having a valve sealing surface 46 that opens and closes the valve passage portion 32 by seating on or apart from the valve seat surface 31.
is biased by a spring 48, and the pressure of the fluid on the casing inlet 21 side and the casing outlet 2
The check valve is configured to open the valve passage section 32 only when the pressure difference between the two side fluids is above a certain level, and the valve seat surface 31 is attached to the block member 30.
A cover portion 39 surrounding the valve body 43 is provided on the downstream side so that an annular gap 51 serving as a flow resistance for the fluid F is formed between the outer peripheral surface 49 of the valve body 43 and the cover portion 39. A check valve characterized by: 2. The outer circumferential surface 49 of the valve body 43 and the cover portion 39 surrounding it are each shaped like a cylinder, and the passage area of the annular gap 51 between the two remains constant until the valve body 43 is displaced by a predetermined stroke after opening. 2. The check valve according to claim 1, wherein the check valve is maintained at a constant value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989013780U JPH02103579U (en) | 1989-02-07 | 1989-02-07 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989013780U JPH02103579U (en) | 1989-02-07 | 1989-02-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02103579U true JPH02103579U (en) | 1990-08-17 |
Family
ID=31224388
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1989013780U Pending JPH02103579U (en) | 1989-02-07 | 1989-02-07 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02103579U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1150969A (en) * | 1997-07-30 | 1999-02-23 | Maruyama Mfg Co Ltd | Forcible valve-type piston pump |
| JP2008509365A (en) * | 2004-08-13 | 2008-03-27 | ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツング | Check valve |
| JP2010203616A (en) * | 2009-03-04 | 2010-09-16 | Jiffy-Tite Co Inc | Check valve with modulation and/or anti-oscillation construction |
| JP4734623B2 (en) * | 2003-09-24 | 2011-07-27 | 株式会社ヴァレオジャパン | Variable capacity clutchless compressor |
| KR20200135441A (en) * | 2018-03-27 | 2020-12-02 | 카와사키 주코교 카부시키 카이샤 | Check valve |
-
1989
- 1989-02-07 JP JP1989013780U patent/JPH02103579U/ja active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1150969A (en) * | 1997-07-30 | 1999-02-23 | Maruyama Mfg Co Ltd | Forcible valve-type piston pump |
| JP4734623B2 (en) * | 2003-09-24 | 2011-07-27 | 株式会社ヴァレオジャパン | Variable capacity clutchless compressor |
| JP2008509365A (en) * | 2004-08-13 | 2008-03-27 | ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツング | Check valve |
| JP2010203616A (en) * | 2009-03-04 | 2010-09-16 | Jiffy-Tite Co Inc | Check valve with modulation and/or anti-oscillation construction |
| KR20200135441A (en) * | 2018-03-27 | 2020-12-02 | 카와사키 주코교 카부시키 카이샤 | Check valve |
| EP3779255A4 (en) * | 2018-03-27 | 2021-12-29 | Kawasaki Jukogyo Kabushiki Kaisha | Check valve |